The Marauders jumped out to a 14-0 lead in the first quarter, thanks to a 45-yard interception return for a touchdown by McMaster’s Tayo Smith and three field goals by Ben MacDonald.
Quarterback Andreas Dueck connected with receiver Jackson Cooling on a 35-yard touchdown to stretch McMaster’s advantage to 23-0 just before halftime.
Dueck completed 17 of his 25 pass attempts for 214 yards and one touchdown. He was sacked twice.
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Mac running back Ricardo Chisholm scored two rushing touchdowns in the second half including a four-yard run in the third quarter and a one-yard plunge late in the fourth.
The win boosts the Marauders’ record to 1-3 after the team was forced to forfeit its first two games of the season due to a player eligibility infraction.
Waterloo starting QB Nolan Kaban went nine of 17 for 89 yards, one interception, and was sacked three times by the McMaster defence.